All it takes is one look at a hammerhead shark to see how these powerful hunters got their name. With their distinctive hammer- or shovel-shaped heads, hammerheads stand apart from other sharks. Readers will find out how hammerheads hunt for food, socialize, and look for mates. They will also learn why hammerheads stay on the move constantly, why they are such good swimmers, and how they can sense small vibrations and electrical signals in the ocean. The complex text in this title allows readers to determine main ideas and explain how they are supported by key details. The grade-appropriate context helps readers determine the meaning of domain-specific words as well.